CN106596062A - Laser synchronous infrared video acquisition device - Google Patents
Laser synchronous infrared video acquisition device Download PDFInfo
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- CN106596062A CN106596062A CN201611141803.4A CN201611141803A CN106596062A CN 106596062 A CN106596062 A CN 106596062A CN 201611141803 A CN201611141803 A CN 201611141803A CN 106596062 A CN106596062 A CN 106596062A
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- China
- Prior art keywords
- laser
- diffuse reflecting
- pulse signal
- reflecting screen
- imager
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to the field of infrared imaging, and more particularly to a laser synchronous infrared video acquisition device which comprises an infrared imager, a synchronous signal generator, a laser detector, a diffuse reflector screen and a host computer. The device can measure the energy density distribution of an infrared spectrum high-power pulse laser under a real environmental condition.
Description
Technical field
The invention belongs to infrared imaging field, and in particular to a kind of laser synchronization infrared video harvester.
Background technology
With developing rapidly for infrared laser countermeasure techniques, it is to evaluate to swash that measurement is entered to the laser spot uniformity that far field is irradiated
The effective means of light device performance.Conventional measuring method has laser power/energy monitoring equipment, image measurement method and detector
Dot matrix measuring method.General laser power/energy monitoring equipment Receiver aperture is limited, is only able to detect in minimum specific spatial domain
Laser energy, it is impossible to meet the measurement of far field beams energy.Traditional image measuring method is mostly to carry out indoors, system knot
Structure is simple, easy to operate, but indoor measurement does not consider impact of the real atmosphere environment to laser beam energy distribution, and imager
There are problems that with laser pulse nonsynchronous.Detector array measuring method can direct measurement laser facula, signal to noise ratio is higher,
Simultaneously high-speed narrow pulse can be responded, but system bulk is larger, and complex operation.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is：How to overcome prior art not enough, there is provided a kind of laser synchronization is infrared to be regarded
Frequency harvester, can carry out infrared spectral coverage high-power pulsed laser energy density distribution measurement under real environmental conditions.
(2) technical scheme
To solve above-mentioned technical problem, the present invention provides a kind of laser synchronization infrared video harvester, and it includes：It is infrared
Imager, synchronous generator, laser detector, diffuse reflecting screen, host computer；
Used as the high-power pulsed laser of measurand, in imager optics spectral coverage, the repetition period is less than its spectral coverage
The imager time of integration；
The high-power pulsed laser launches laser to diffuse reflecting screen；
The diffuse reflecting screen is used for after laser signal is received, and the laser pulse signal of certain dispersion angle is overflow
Reflection；
The laser detector is arranged in diffuse reflecting screen, for measuring the pulse signal of laser instrument, and by pulse signal
Send to synchronous generator；
The synchronous generator is used to measure the cycle of the pulse signal, and sends to host computer；
The host computer sets divider ratio, the time delay of synchronous generator according to the cycle of the pulse signal for receiving
Time；
The synchronous generator generates imaging synchronizing signal according to set divider ratio, delay time, and sends
To infrared imaging device；
The infrared imaging device is directed at diffuse reflecting screen, and according to the imaging synchronizing signal external trigger imaging is exposed, and
Laser facula signal in collection diffuse reflecting screen；Complete task.
Wherein, the host computer is responsible for parameter bookbinding, according to imager internal delay time time, imager highest frame frequency, swashs
In the cycle of light pulse signal, calculate divider ratio, the delay time of synchronous generator.
(3) beneficial effect
Compared with prior art, the present invention provides a kind of laser synchronization infrared video harvester, can be in true ring
Infrared spectral coverage high-power pulsed laser energy density distribution measurement is carried out under the conditions of border.
Description of the drawings
Fig. 1 is the functional block diagram of the present invention.
Fig. 2 is the working timing figure of the present invention.
Specific embodiment
To make the purpose of the present invention, content and advantage clearer, with reference to the accompanying drawings and examples, to the present invention's
Specific embodiment is described in further detail.
To solve above-mentioned technical problem, the present invention provides a kind of laser synchronization infrared video harvester, and it includes：It is infrared
Imager, synchronous generator, laser detector, diffuse reflecting screen, host computer；
Used as the high-power pulsed laser of measurand, in imager optics spectral coverage, the repetition period is less than its spectral coverage
The imager time of integration；
The high-power pulsed laser launches laser to diffuse reflecting screen；
The diffuse reflecting screen is used for after laser signal is received, and the laser pulse signal of certain dispersion angle is overflow
Reflection；
The laser detector is arranged in diffuse reflecting screen, for measuring the pulse signal of laser instrument, and by pulse signal
Send to synchronous generator；
The synchronous generator is used to measure the cycle of the pulse signal, and sends to host computer；
The host computer sets divider ratio, the time delay of synchronous generator according to the cycle of the pulse signal for receiving
Time；
The synchronous generator generates imaging synchronizing signal according to set divider ratio, delay time, and sends
To infrared imaging device；
The infrared imaging device is directed at diffuse reflecting screen, and according to the imaging synchronizing signal external trigger imaging is exposed, and
Laser facula signal in collection diffuse reflecting screen；Complete task.
Wherein, the host computer is responsible for parameter bookbinding, according to imager internal delay time time, imager highest frame frequency, swashs
In the cycle of light pulse signal, calculate divider ratio, the delay time of synchronous generator.
Comprised the following steps based on the course of work of said apparatus：
1) the concrete size of the angle of divergence according to laser instrument, diffuse reflecting screen, adjusts the distance of laser instrument and diffuse reflecting screen；According to
The concrete size of the market angle of infrared imaging device, diffuse reflecting screen, adjusts the distance of imager and target plate；
2) infrared imaging device, the cable between synchronous generator, laser detector, host computer are connected；
3) infrared imaging device is imaged using internal synchronization mode, and diffuse reflecting screen is adjusted in visual field；Laser alignment is unrestrained anti-
Penetrate screen；
4) laser instrument transmitting pulse signal, laser detector measurement output pulse signal, synchronous generator measurement arteries and veins
Rush the cycle；
5) pulse period according to synchronous generator measurement, imager highest frame frequency, exposure delay time, estimation dress
Divider ratio, synchronizing signal delay time are ordered, is bound to synchronous generator by host computer.Estimation Specific Principles are as follows：
When imager highest frame frequency>Laser pulse period divider ratio=1；
When imager highest frame frequency<=laser pulse period divider ratio=laser pulse period/imager highest frame frequency (to
On round)；
Synchronizing signal delay time=divider ratio * laser pulse periods-exposure delay time；
Concrete sequential is shown in accompanying drawing 2.
6) synchronous generator is bound according to host computer divider ratio, synchronizing signal delay time, produce imaging synchronous
Signal, realizes the synchronous imaging to post laser hot spot；
7) imaging effect is observed by host computer video, synchronizing signal delay time is finely tuned by host computer, make imaging clear
It is clear.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement and deformation can also be made, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of laser synchronization infrared video harvester, it is characterised in that it includes：Infrared imaging device, synchronizing signal occur
Device, laser detector, diffuse reflecting screen, host computer；
Used as the high-power pulsed laser of measurand, in imager optics spectral coverage, the repetition period is less than imaging for its spectral coverage
The device time of integration；
The high-power pulsed laser launches laser to diffuse reflecting screen；
The diffuse reflecting screen is used for after laser signal is received, and the laser pulse signal of certain dispersion angle is carried out unrestrained anti-
Penetrate；
The laser detector is arranged in diffuse reflecting screen, for measuring the pulse signal of laser instrument, and pulse signal is sent
To synchronous generator；
The synchronous generator is used to measure the cycle of the pulse signal, and sends to host computer；
The host computer sets divider ratio, the delay time of synchronous generator according to the cycle of the pulse signal for receiving；
The synchronous generator generates imaging synchronizing signal according to set divider ratio, delay time, and sends to red
Outer imager；
The infrared imaging device is directed at diffuse reflecting screen, and according to the imaging synchronizing signal external trigger imaging is exposed, and gathers
Laser facula signal in diffuse reflecting screen；Complete task.
2. laser synchronization infrared video harvester as claimed in claim 1, it is characterised in that the host computer is responsible for parameter
Bookbinding, according to the imager internal delay time time, imager highest frame frequency, laser pulse signal cycle, calculate synchronizing signal send out
Divider ratio, the delay time of raw device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141803.4A CN106596062A (en) | 2016-12-12 | 2016-12-12 | Laser synchronous infrared video acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611141803.4A CN106596062A (en) | 2016-12-12 | 2016-12-12 | Laser synchronous infrared video acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106596062A true CN106596062A (en) | 2017-04-26 |
Family
ID=58597701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611141803.4A Pending CN106596062A (en) | 2016-12-12 | 2016-12-12 | Laser synchronous infrared video acquisition device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106596062A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328714A (en) * | 2017-06-27 | 2017-11-07 | 合肥泰禾光电科技股份有限公司 | A kind of rotation sweep equipment |
| CN107767721A (en) * | 2017-10-26 | 2018-03-06 | 中国科学院长春光学精密机械与物理研究所 | A kind of artillery fire analogue system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815127A (en) * | 1981-07-20 | 1983-01-28 | Matsushita Electric Ind Co Ltd | Measuring device for laser far field pattern |
| CN105067226A (en) * | 2015-07-31 | 2015-11-18 | 南京理工大学 | Pulse laser far field optical axis stability detection method |
-
2016
- 2016-12-12 CN CN201611141803.4A patent/CN106596062A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5815127A (en) * | 1981-07-20 | 1983-01-28 | Matsushita Electric Ind Co Ltd | Measuring device for laser far field pattern |
| CN105067226A (en) * | 2015-07-31 | 2015-11-18 | 南京理工大学 | Pulse laser far field optical axis stability detection method |
Non-Patent Citations (5)
| Title |
|---|
| 何凌 等: "激光远场焦斑测试技术的实验研究", 《强激光与粒子束》 * |
| 张立: "远场激光能量密度分布的数值与图像估算", 《计算机仿真》 * |
| 张震 等: "重复脉冲激光造成扫描型CCD背景条纹的规律", 《光学精密工程》 * |
| 段锦 等: "激光远场能量密度分布测试系统的实现", 《激光与光电子学进展》 * |
| 马翌菲: "激光照射远场能量密度测试系统设计", 《中国优秀硕士论文全文数据库信息科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328714A (en) * | 2017-06-27 | 2017-11-07 | 合肥泰禾光电科技股份有限公司 | A kind of rotation sweep equipment |
| CN107767721A (en) * | 2017-10-26 | 2018-03-06 | 中国科学院长春光学精密机械与物理研究所 | A kind of artillery fire analogue system |
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Application publication date: 20170426 |